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Vegetarian Diet
Reviewed by Medicinsk Expert•Last updated: 2026-10-22•Food Nutrition

Vegetarian Diet

A vegetarian diet centers on plant-based foods, though nutritional planning is essential to ensure adequate intake of key vitamins and minerals.

Overview

A vegetarian diet focuses on plants for food. These include fruits, vegetables, dried beans and peas, grains, seeds and nuts. There is no single type of vegetarian diet. Instead, vegetarian eating patterns usually fall into the following groups:

  • The vegan diet, which excludes all meat and animal products
  • The lacto vegetarian diet, which includes plant foods plus dairy products
  • The lacto-ovo vegetarian diet, which includes both dairy products and eggs

Nutritional Considerations

People who follow vegetarian diets can get all the nutrients they need. However, they must be careful to eat a wide variety of foods to meet their nutritional needs. Nutrients vegetarians may need to focus on include protein, iron, calcium, zinc and vitamin B12.

United States Department of Agriculture

Frequently Asked Questions

Focus on combining complementary plant proteins throughout the day rather than in a single meal. Good sources include lentils, chickpeas, tofu, tempeh, quinoa, and seitan. By eating a variety of these legumes, grains, and soy products daily, you naturally consume all essential amino acids. For example, a meal of rice and beans provides a complete protein profile when eaten together or within the same day. What are the specific signs of iron deficiency that vegetarians should watch for, and how can absorption be improved?::Common signs include persistent fatigue, pale skin, shortness of breath, and cold hands or feet. Since non-heme iron from plants is absorbed less efficiently than heme iron from meat, you should pair iron-rich foods like spinach, lentils, and fortified cereals with vitamin C sources such as citrus fruits, bell peppers, or strawberries. Avoid drinking tea or coffee with meals, as tannins can significantly inhibit iron absorption. Is it safe for children to follow a vegetarian diet, and what specific nutrients require extra attention?::Yes, children can thrive on well-planned vegetarian diets, but they have higher nutritional needs relative to their body size. You must pay close attention to vitamin B12, which is not naturally found in plant foods, so a B12 supplement or fortified foods are essential. Additionally, ensure adequate calcium intake through fortified plant milks, tofu, and leafy greens to support rapid bone growth, and monitor zinc levels by including nuts, seeds, and legumes in their meals. How should a lacto-ovo vegetarian manage their diet during pregnancy to support fetal development?::Pregnant vegetarians should prioritize folate, iron, and DHA. While plant foods provide folate, iron needs increase significantly, so consume iron-rich legumes and fortified grains with vitamin C. For DHA, which is crucial for fetal brain development, consider algae-based omega-3 supplements, as standard fish oil is not an option. Continue taking prenatal vitamins that include B12 and consult your healthcare provider to monitor your iron levels via blood tests.
Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.

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